Join causing Error?

Can anyone tell me why this: Line 282 mysql_select_db("centraldb",$db); Line 283 $qorder++; Line 284 $result = mysql_query("SELECT q.questid, q.question, q.answer, q.qorder, q.depart, q.catid, q.active, q.global, q.adate, q.author, q.authoremail, q.askemail, c.catid, c.category, c.under, c.corder, c.active FROM central_groupfaqq q, central_groupfaqcat c WHERE q.active = '1' AND q.global = '1' AND c.active = '1' ORDER BY c.under, c.order, q.qorder",$db); Line 285 while ($myrow = mysql_fetch_row($result)) Would cause this error: Warning: Supplied argument is not a valid MySQL result resource in faqbody.php3 on line 285 When changing the same SELECT statement to: Line 284 $result = mysql_query("SELECT * FROM central_groupfaqq WHERE active = '1' ORDER BY qorder",$db); Works perfectly? Keith Spiller a.k.a. Larentium